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A high‐precision respirometer for measuring small rates of change in the oxygen concentration of natural waters
Author(s) -
Griffith Peter C.
Publication year - 1988
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1988.33.4.0632
Subject(s) - respirometer , respiration , plankton , environmental chemistry , oceanography , oxygen , environmental science , polarography , apparent oxygen utilisation , chemistry , biology , geology , botany , inorganic chemistry , organic chemistry
A computer‐controlled system is described that can detect very low respiration rates of planktonic organisms in unconcentrated samples of ocean water. The polarographic sensor used consumed < 10 −4 µ mol O 2 h −1 and thus required little stirring. Estimates of community respiration of −2.23±0.06 and −0.19±0.04 µ M O 2 h −1 were made during short‐term incubations of the waters of the middle and outer continental shelf of Georgia.